Stochastic return-to-isotropy model. More...

Inheritance diagram for Stochastic< CloudType >:

Collaboration diagram for Stochastic< CloudType >:

Public Member Functions
	TypeName ("stochastic")
	Runtime type information. More...

	Stochastic (const dictionary &dict, CloudType &owner)
	Construct from components. More...

	Stochastic (const Stochastic< CloudType > &cm)
	Construct copy. More...

virtual autoPtr< IsotropyModel< CloudType > >	clone () const
	Construct and return a clone. More...

virtual	~Stochastic ()
	Destructor. More...

virtual void	calculate ()
	Member Functions. More...

Public Member Functions inherited from IsotropyModel< CloudType >
	TypeName ("isotropyModel")
	Runtime type information. More...

	declareRunTimeSelectionTable (autoPtr, IsotropyModel, dictionary,(const dictionary &dict, CloudType &owner),(dict, owner))
	Declare runtime constructor selection table. More...

	IsotropyModel (CloudType &owner)
	Construct null from owner. More...

	IsotropyModel (const dictionary &dict, CloudType &owner, const word &type)
	Construct from components. More...

	IsotropyModel (const IsotropyModel< CloudType > &cm)
	Construct a copy. More...

virtual	~IsotropyModel ()
	Destructor. More...

Public Member Functions inherited from CloudSubModelBase< CloudType >
	CloudSubModelBase (CloudType &owner)
	Construct null from owner cloud. More...

	CloudSubModelBase (CloudType &owner, const dictionary &dict, const word &baseName, const word &modelType, const word &dictExt="Coeffs")
	Construct from owner cloud without name. More...

	CloudSubModelBase (const word &modelName, CloudType &owner, const dictionary &dict, const word &baseName, const word &modelType)
	Construct from owner cloud with name. More...

	CloudSubModelBase (const CloudSubModelBase< CloudType > &smb)
	Copy constructor. More...

virtual	~CloudSubModelBase ()
	Destructor. More...

const CloudType &	owner () const
	Return const access to the owner cloud. More...

virtual bool	writeTime () const
	Flag to indicate when to write a property. More...

CloudType &	owner ()
	Return non-const access to the owner cloud for manipulation. More...

virtual void	write (Ostream &os) const
	Write. More...

Public Member Functions inherited from subModelBase
	subModelBase (dictionary &properties)
	Construct null. More...

	subModelBase (dictionary &properties, const dictionary &dict, const word &baseName, const word &modelType, const word &dictExt="Coeffs")
	Construct from components without name. More...

	subModelBase (const word &modelName, dictionary &properties, const dictionary &dict, const word &baseName, const word &modelType)
	Construct from components with name. More...

	subModelBase (const subModelBase &smb)
	Copy constructor. More...

virtual	~subModelBase ()
	Destructor. More...

const word &	modelName () const
	Return const access to the name of the sub-model. More...

const dictionary &	dict () const
	Return const access to the cloud dictionary. More...

const word &	baseName () const
	Return const access to the base name of the sub-model. More...

const word &	modelType () const
	Return const access to the sub-model type. More...

const dictionary &	coeffDict () const
	Return const access to the coefficients dictionary. More...

const dictionary &	properties () const
	Return const access to the properties dictionary. More...

virtual bool	defaultCoeffs (const bool printMsg) const
	Returns true if defaultCoeffs is true and outputs on printMsg. More...

virtual void	cacheFields (const bool store)
	Cache dependent sub-model fields. More...

template<class Type >
Type	getBaseProperty (const word &entryName, const Type &defaultValue=pTraits< Type >::zero) const
	Retrieve generic property from the base model. More...

template<class Type >
void	getBaseProperty (const word &entryName, Type &value) const
	Retrieve generic property from the base model. More...

template<class Type >
void	setBaseProperty (const word &entryName, const Type &value)
	Add generic property to the base model. More...

template<class Type >
void	getModelProperty (const word &entryName, Type &value) const
	Retrieve generic property from the sub-model. More...

template<class Type >
Type	getModelProperty (const word &entryName, const Type &defaultValue=pTraits< Type >::zero) const
	Retrieve generic property from the sub-model. More...

template<class Type >
void	setModelProperty (const word &entryName, const Type &value)
	Add generic property to the sub-model. More...

void	operator= (const subModelBase &)=delete
	Disallow default bitwise assignment. More...

Additional Inherited Members
Public Types inherited from CloudSubModelBase< CloudType >
typedef CloudType	cloudType
	Type of cloud this model was instantiated for. More...

Static Public Member Functions inherited from IsotropyModel< CloudType >
static autoPtr< IsotropyModel< CloudType > >	New (const dictionary &dict, CloudType &owner)
	Selector. More...

Protected Member Functions inherited from subModelBase
bool	inLine () const
	Flag to indicate whether data is/was read in-line. More...

Protected Attributes inherited from IsotropyModel< CloudType >
autoPtr< TimeScaleModel >	timeScaleModel_
	Time scale model. More...

Protected Attributes inherited from CloudSubModelBase< CloudType >
CloudType &	owner_
	Reference to the cloud. More...

Protected Attributes inherited from subModelBase
const word	modelName_
	Name of the sub-model. More...

dictionary &	properties_
	Reference to properties dictionary e.g. for restart. More...

const dictionary	dict_
	Copy of dictionary used during construction. More...

const word	baseName_
	Name of the sub-model base class. More...

const word	modelType_
	Type of the sub-model. More...

const dictionary	coeffDict_
	Coefficients dictionary. More...

Detailed Description

template<class CloudType>
class Foam::IsotropyModels::Stochastic< CloudType >

Stochastic return-to-isotropy model.

Particle velocities are modified by sampling a gaussian-plus-delta distribution, which depends on a time-scale. This randomises some particle velocities whilst leaving others unchanged. The lower the value of the time-scale, the greater the proportion of particle velocities affected.

A correction step is performed at the end to ensure that the model conserves both momentum and granular temperature.

Reference:

    "Inclusion of collisional return-to-isotropy in the MP-PIC method"
    P O'Rourke and D Snider
    Chemical Engineering Science
    Volume 80, Issue 0, Pages 39-54, December 2012

Source files

Definition at line 67 of file Stochastic.H.